Method of producing multilayer ribbon strips



July 18, 1939. B. c. MILLER METHOD OF PRODUCING MULTILAYER RIBBON STRIPS Filed Jan. 4, 1936 ATTORN EY Patented `July 18, 1939 UNITED STATES PATENT OFFICE METHOD OF PRODUCING MULTILAYER RIBBON STRIPS This invention relates to flexible material and has as its main object and feature the production of a m-ulti-layer web section of uniform thickness which simulates a single thickness of material that apparently has, on both faces, decoration as weil as uniform lustre, and to the method of obtaining such product.

In the accompanying drawing, the invention is disclosed in several concrete and preferred lu forms, in which Fig. 1 is a diagrammatic view in side elevation showing a preferred form of mechanism by which a preferred form of the method can be carried out, and a preferred form of the desired product can be obtained;

Fig. 2 is a perspective view of a web portion of multi-layer material with the layers partly separated;

Fig. 3 is a perspective view of the web portion y of Fig. 2 showing the slitting operation;

Fig. 4 is a fragmentary sectional view substantially on the plane of line 4-4 of Fig. 2; and

Fig. 5 is a view similar to Fig. 4 showing a modified form of the invention.

The material used can be transparent regenerated cellulose, cellulose acetate, gelatin or any transparent and highly lustrous material such as non-brous cellulose material that lends itself to decorative purposes. Material of this character l is now being used extensively for wrapping and as a substitute for twine or tape and it has become the custom to decorate, as by printing, the material so used. Both sides of the material are highly lustrous, but on being decorated, as by printing, said material becomes dull in the decorated areas and presents an unpleasing appearance, especially when only one side is decorated because a highly and uniformly lustrous surface is then contrasted with the other surface which has lost some of its brilliance by being decorated. The invention overcomes this objection by uniformly uniting two layers of lustrous and transparent material by means of a lm of translucent and flexible adhesive, the inner surface of at least one of the layers being decorated with nonbro-us non-lustrous decoration such as ink. In this way, the product, which is of uniform thickness, simulates a single thickness of material that apparently has, on both faces, decoration as well as uniform lustre, because the decoration is substantially equally visible from both sides owing to the transparence of the layers and the translucence of the adhesive, and because the adhesive uniformly unites the layers of material and renders the inner faces thereof substantially devoid of reflecting qualities.

In Fig. 1 is shown a mechanism for carrying out the process and obtaining the product. I0 and I I indicate two rolls of transparent and lustrous material such as non-fibrous cellulose. material. One web, I2, is led through a printing machine, the printing cylinder I3 of which decorates one face of the web. Thevother web, I4, is led to an adhesive applying device, the adhe- .10 sive-applying roller I5 of which applies a film of adhesive to one of the faces of said web. The two webs are then led to a pair of combining or pressure rollers I6, and are there united into a web section I'I of uniform thickness with the printed face of web I2 innermost or adjacent the adhesive face of web I4. Web section I'I may then pass through slitters I8 and the narrower web sections or strips I9 can then be rewound into coils 20. 'I'he decoration is indicated at 2I 20 and may be of any character but is here shown as conventional stripes, and the flexible and translucent adhesive is shown at 22.

Of course, if desired, more than two layers of material can be employed and if desired both of 25 the inside faces can be decorated and have adhesive applied to them. 'I'hus in Fig. 5, decoration 2 Ia is applied to vboth layers I2a and Ma and a film of flexible and translucent adhesive 22a is interposed by applying it to either one or 30 both layers.

The adhesive used may be of any character, suitable for the purpose, such as what is commercially known as adhesive 990 of the Union Paste Co. I am informed that the ingredients 35 of this adhesive are as follows:

Parts by weight Sugar 15 Casein 4 Concentrated latex of the 70% concen- 40 tration 60 Water 22 Preservative .8 Sodium hydroxide 49 Baum .6 45

I claim:

1. The method of producing multi-layer ribbon strips of uniform thickness-but which simulate a single thickness of material that has, on both faces, uniform lustre as well as decoration- 50 which consists in decorating with lines of a nonfibrous, non-lustrous substance, one face of a layei of lustrous, translucent material and uniting said layer, with its decorated face innermost, to another layer of the same material as the rst one 55 with a film of flexible and translucent adhesive between the two layers; and then slitting the united layers, along the lines of decoration so as to leave decoration on the edges of adjacent strips.

2. The method of producing multi-layer ribbon strips of uniform thickness-but which simulate a single thickness of material that has. on both faces, uniform lustre as well as decoration- 10 which consists in decorating, with lines of a nonfibrous, non-lustrous substance, one face of a layer oi' lustrous, translucent material and uniting said layer, with its decorated iace innermost, to another layer of the same material as the rst one with a lrn of flexible and translucent adhesive betweenl the two layers; and then slitting the united layers in deilnte relation to the printed lines.

BERT C. MILLER. 

